JP7140952B2 - gas permeable structure - Google Patents

gas permeable structure Download PDF

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JP7140952B2
JP7140952B2 JP2018109842A JP2018109842A JP7140952B2 JP 7140952 B2 JP7140952 B2 JP 7140952B2 JP 2018109842 A JP2018109842 A JP 2018109842A JP 2018109842 A JP2018109842 A JP 2018109842A JP 7140952 B2 JP7140952 B2 JP 7140952B2
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聖一 斎
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Mutsuki Electric KK
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Description

本発明は、水分を透過させにくくしてガス透過性をもたせるガス透過構造体に関する。TECHNICAL FIELD The present invention relates to a gas permeable structure that is difficult to permeate moisture and has gas permeability.

密閉容器の内部に発生したガスを外部に排出ができるように容器本体に形成したガス透過構造体において、水分を透過させにくくしてガス透過性をもたせるガス透過構造体が種々提案されている。In the gas permeable structure formed in the container body so as to allow the gas generated inside the closed container to be discharged to the outside, various gas permeable structures have been proposed which are difficult to permeate moisture and have gas permeability.

特許文献１にて、内容物を密閉構造に収容するケースの通気構造にもちいられるように、通気性を有し水蒸気の透過を防止しうる水蒸気透過防止多孔膜で、この多孔膜はポリオレフィン系樹脂と無機粉体と可塑剤を主体とする原料組成物を溶融混練して製膜した膜か可塑剤を除去することから得られる膜であり、可塑剤が抜けたことで形成される平均孔径が約０．１～０．２μｍの孔と、無機粉体自体がもともと有する平均孔径が約０．０１～０．０５μｍの孔との主に２種類の孔を有した構造となって、全体として、平均細孔径が０．０５～０．２μｍの孔構造で親水性多孔膜となって、膜全体に均一かつ微細で複雑に入り組んだ複雑な経路を有する無数の連通孔が形成されて、酸素等のガスを透過させ、また、細孔表面が親水性となっているので、水蒸気が膜を通過しようとすると、細孔内で水蒸気が凝縮を起こして液体である水に変化し、細孔を通過できないようにした多孔質構造の膜が提案されている。In Patent Document 1, a water vapor permeation preventing porous film that has air permeability and can prevent water vapor permeation, as used in the ventilation structure of a case that houses contents in a sealed structure, and this porous film is made of polyolefin resin. It is a film formed by melting and kneading a raw material composition mainly composed of inorganic powder and a plasticizer or a film obtained by removing the plasticizer, and the average pore diameter formed by removing the plasticizer is A structure having mainly two types of pores, that is, pores having a diameter of about 0.1 to 0.2 μm and pores having an average pore diameter of about 0.01 to 0.05 μm originally possessed by the inorganic powder itself, is obtained as a whole. , a hydrophilic porous membrane with a pore structure having an average pore diameter of 0.05 to 0.2 μm, and a myriad of uniform, fine, and intricately intricate channels with innumerable communicating pores are formed throughout the membrane, oxygen In addition, the surface of the pores is hydrophilic, so when water vapor tries to pass through the membrane, the water vapor condenses in the pores and changes to water, which is a liquid, and the pores A membrane with a porous structure has been proposed to prevent the passage of

しかし、特許文献１にて提案された多孔膜は、酸素等のガスは透過させ、水蒸気を透過させない選択透過性を有するガス透過構造体の提案であるが、内外表面が親水性となった多孔膜をもちいる必要がある。However, the porous membrane proposed in Patent Document 1 is a proposal of a gas permeable structure having selective permeability that allows gases such as oxygen to permeate but does not allow water vapor to permeate. It is necessary to use a membrane.

また、特許文献２にて、微孔を透設した有孔フイルムの片面に透過性樹脂膜を被着形成し、他面に、切り込みを施した不透過性フイルム被着して内側からの昇圧によって切り込みが開口し、内側からの気体が透過性樹脂膜から微孔を介して開口した切り込みから外に抜けて気体透過性となるプラスチックフイルムを容器のシール蓋等として用いられるガス透過構造体が提案されている。In addition, in Patent Document 2, a permeable resin film is formed on one side of a perforated film in which fine holes are provided, and an impermeable film with cuts is formed on the other side to increase pressure from the inside. The gas permeable structure is a plastic film that is used as a sealing lid for a container, etc. Proposed.

しかし、特許文献２にて提案された昇圧により気体透過性（ガス透過性）となるプラスチックフイルムにあっては、ガスを透過する微孔には透過性樹脂膜および切り込みを施した不透過性フイルムが必要であり、切り込みは各微孔毎に施す必要がある。However, in the plastic film that becomes gas permeable (gas permeable) by pressurization proposed in Patent Document 2, the micropores through which gas permeates are covered with a permeable resin film and an impermeable film with cuts. is required, and a cut must be made for each microhole.

また、特許文献３にて、水蒸気などの水分を遮断して密閉容器の内部にて発生したガスを密閉容器の外部に排出しやすくするガス透過部材として、密閉容器本体（容器本体）に貫通孔を形成してこの貫通孔は気体の透過性の差を利用したガス選択作用が発現するように水蒸気などの水分を遮断させる大きさの孔径に設定されて、水分を透過させにくくしてガスを透過させるガス透過構造体を本願の発明者らが提案している。In addition, in Patent Document 3, as a gas permeable member that blocks moisture such as water vapor and facilitates discharge of gas generated inside the sealed container to the outside of the sealed container, a through hole in the sealed container body (container body) This through hole is set to a size that blocks moisture such as water vapor so that a gas selection action utilizing the difference in gas permeability is expressed, making it difficult for moisture to permeate and gas The inventors of the present application have proposed a permeable gas permeable structure.

この特許文献３に提案するガス透過構造体は、気体の透過性の差を利用したガス選択作用が発現するように水蒸気などの水分を遮断させる大きさの孔径に設定して貫通孔をもちいる必要がある。The gas permeable structure proposed in Patent Document 3 uses through holes with a hole diameter set to a size that blocks moisture such as water vapor so that a gas selective action utilizing the difference in gas permeability is exhibited. There is a need.

特開２０１２－３０１８４号公報JP 2012-30184 A 特開平１１－３０１７４８号公報JP-A-11-301748 特開２０１６－１０３６３１号公報JP 2016-103631 A

本発明は、特許文献１のような内外表面が親水性の多孔膜としたり、特許文献２のような透過性樹脂膜および切り込みを施した不透過性フイルムをもちいたりせずに、また、特許文献３のような水蒸気などの水分を遮断させる大きさの孔径に設定する必要がなく、簡単な構成で水分を透過させにくくしてガス透過性をもたせるガス透過構造体を提供することを目的とする。The present invention does not use a porous membrane with hydrophilic inner and outer surfaces as in Patent Document 1, or uses a permeable resin membrane and a notched impermeable film as in Patent Document 2. To provide a gas-permeable structure which does not need to be set to a pore size large enough to block moisture such as water vapor as described in Document 3, and has gas permeability by making it difficult for moisture to permeate with a simple structure. do.

本発明の請求項１に記載のガス透過構造体は、密閉容器の内部に発生したガスを外部に排出させるように容器本体の基材に形成したガス透過構造体であって、前記基材にはガスが排出される方向に内外面に連通した多数の孔が形成されており、前記多数の孔には固形状のコア素子が配設されてあって、前記コア素子は前記多数の孔のそれぞれの孔の内表面と部分的に接触しており、前記密閉容器の内部のガス圧で前記コア素子が撓んで前記孔の内表面から離間して前記多数の孔のそれぞれが連通してガス透過路となるガス透過構造体において、前記コア素子は、フッ素樹脂またはシリコーンゴムでできており、前記多数の孔の隣接する孔に連接部で接続して配設されていることを特徴とするガス透過構造体。A gas permeable structure according to claim 1 of the present invention is a gas permeable structure formed in a base material of a container body so as to discharge gas generated inside a closed container to the outside, wherein the base material has is formed with a large number of holes communicating with the inner and outer surfaces in the direction in which gas is discharged. The core element is partially in contact with the inner surface of each hole, and the core element is bent by the gas pressure inside the closed container to separate from the inner surface of the hole, and each of the many holes communicates with the gas. In the gas permeable structure serving as a permeation path, the core element is made of fluororesin or silicone rubber, and is arranged so as to be connected to adjacent ones of the plurality of holes at connecting portions. Gas permeable structure.

本発明のガス透過構造体は、密閉容器の内部に発生したガスを外部に排出させるように容器本体の基材に形成したガス透過構造体であって、前記基材にはガスが排出される方向に内外面に連通した多数の孔が形成されており、前記多数の孔には固形状のコア素子が配設されてあって、前記コア素子は前記多数の孔のそれぞれの孔の内表面と部分的に接触しており、前記密閉容器の内部のガス圧で前記コア素子が撓んで前記孔の内表面から離間して前記多数の孔のそれぞれが連通してガス透過路となるガス透過構造体において、前記コア素子は、フッ素樹脂またはシリコーンゴムでできており、前記多数の孔の隣接する孔に連接部で接続して配設されているので、コア素子が基材の内外面に連通した孔の内表面に部分的に接触することにより水分を透過させにくくしてガス透過性をもたせ、密閉容器の内部のガス圧でコア素子が撓んで部分的に接触している部位が離間することによりガスが外部に排出される簡単な構成でガス透過構造体が得られる。The gas-permeable structure of the present invention is a gas-permeable structure formed in the base material of the container body so as to discharge the gas generated inside the closed container to the outside, and the gas is discharged to the base material. A large number of holes communicating with the inner and outer surfaces in the direction are formed, and a solid core element is disposed in the large number of holes, and the core element is formed on the inner surface of each hole of the large number of holes. and the core element is bent by the gas pressure inside the sealed container, and separated from the inner surface of the hole, and each of the holes communicates with each other to form a gas permeation path. In the structure, the core element is made of fluororesin or silicone rubber, and is arranged in such a manner that it is connected to adjacent holes of the plurality of holes at connecting portions, so that the core element is attached to the inner and outer surfaces of the base material. By partially contacting the inner surface of the communicating holes, it is difficult for moisture to permeate, and gas permeability is provided. By doing so, a gas permeable structure can be obtained with a simple structure in which the gas is discharged to the outside.

本発明の実施形態１で、容器本体の構成部材となる基材を有するガス透過構造体を示す部分断面拡大図である。1 is an enlarged partial cross-sectional view showing a gas permeable structure having a base material that is a constituent member of a container body in Embodiment 1 of the present invention. FIG. 本発明の実施形態１で、ガス透過構造体におけるガス透過路を示す部分断面図である。1 is a partial cross-sectional view showing a gas permeation path in a gas permeation structure in Embodiment 1 of the present invention. FIG. 本発明の実施形態１で、容器本体の構成部材となる基材を有するガス透過構造体を示す平面図である。1 is a plan view showing a gas permeable structure having a base material that is a constituent member of a container body in Embodiment 1 of the present invention. FIG. 本発明の実施形態１で、ガス透過構造体が形成された密閉容器を示す断面図である。1 is a cross-sectional view showing a closed container in which a gas permeable structure is formed in Embodiment 1 of the present invention; FIG. 本発明の実施形態２で、ガス透過構造体におけるガス透過路を示す部分断面図である。FIG. 4 is a partial cross-sectional view showing gas permeation paths in a gas permeation structure in Embodiment 2 of the present invention. 図５のガス透過路におけるガス透過作用を示す部分断面図である。6 is a partial cross-sectional view showing gas permeation action in the gas permeation path of FIG. 5; FIG. 本発明の実施形態３で、ガス透過構造体の基材が容器本体内の圧力を受けていない状態を示す断面図であり、その要部を付記して拡大した断面図である。FIG. 10 is a cross-sectional view showing a state in which the base material of the gas permeable structure is not subjected to pressure inside the container body in Embodiment 3 of the present invention, and is an enlarged cross-sectional view with an additional note of the main part. 本発明の実施形態３で、図７に示す基材が容器本体内の圧力を受けて上方に撓んだ状態を示す断面図であり、その要部を付記して拡大した断面図である。FIG. 8 is a cross-sectional view showing a state in which the substrate shown in FIG. 7 is bent upward due to the pressure in the container body in Embodiment 3 of the present invention, and is an enlarged cross-sectional view with an additional note of the main part. 本発明の実施形態４で、ガス透過構造体の異なる実施形態の要部を示す平面図である。FIG. 10 is a plan view showing a main part of a different embodiment of the gas permeable structure in Embodiment 4 of the present invention;

以下、本発明の実施形態について図面を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施形態１）
図１～図４は容器本体の構成部材となる基材を有するガス透過構造体を示し、以下説明する。(Embodiment 1)
1 to 4 show a gas permeable structure having a base material that is a constituent member of the container body, and will be described below.

図４は、内部にガスが発生する密閉容器９として電気二重層キャパシタやリチウム電池などの密閉型電気化学デバイスの密閉容器を例示している。この密閉容器９を密閉させる容器本体は、ガス排出孔５Ａを有する蓋体５と一端（図４においては上端）が開口した箱体６とからなり、箱体６の開口した前記一端は蓋体５にて閉塞されている。この蓋体５のガス排出孔５Ａがガス透過構造体の基材１にて覆われるようにガス透過構造体の基材１が蓋体５に密着接合されることにより、蓋体５と箱体６と基材１とで容器本体が構成されている。この箱体６の内部の空間部６Ａには電解質７が収容されている。また、蓋体５には電極端子８、８が形成されており、この電極端子８、８は箱体６内の電解質７に電気接続されている。このようにして、ガス透過構造体は容器本体に形成されているので、密閉型電気化学デバイスの密閉容器９においてその内部に発生したガスをガス排出孔５Ａから外部に排出させることができる。FIG. 4 exemplifies a sealed container for a sealed electrochemical device such as an electric double layer capacitor or a lithium battery as the closed container 9 in which gas is generated. A container body for sealing the closed container 9 comprises a lid body 5 having a gas discharge hole 5A and a box body 6 having an open end (upper end in FIG. 4). 5 is blocked. The base material 1 of the gas permeable structure is closely joined to the lid body 5 so that the gas discharge holes 5A of the lid body 5 are covered with the base material 1 of the gas permeable structure. 6 and base material 1 constitute a container body. An electrolyte 7 is accommodated in a space 6A inside the box 6. As shown in FIG. Electrode terminals 8 , 8 are formed on the lid 5 and electrically connected to the electrolyte 7 in the box 6 . Since the gas permeable structure is formed in the container body in this way, the gas generated inside the closed container 9 of the closed electrochemical device can be discharged to the outside through the gas discharge holes 5A.

次に、図１～図３にて容器本体の構成部材となる基材１を有するガス透過構造体を説明する。Next, a gas permeable structure having a base material 1, which is a constituent member of the container body, will be described with reference to FIGS. 1 to 3. FIG.

図１～図３において、ガス排出孔５Ａを覆う基材１には密閉容器９の内部（図１においては下部）に発生したガスがガス排出孔５Ａから矢印方向に流れて外部（図１においては上部）に排出されるよう外部と連通した多数の孔２が形成されており、各孔２には固形状のコア素子３が配設されている。この基材１の素材は外部と連通した多数の孔２を形成できる素材であれば、金属材や非金属材などガス透過性を有しない任意の素材でよい。また、固形状のコア素子３の素材は、基材１の孔２に配設される素材であれば、金属材や非金属材など任意の固形状の素材であればよい。各孔２に配設されるコア素子３において、ガスが排出される方向に隣接する孔２のそれぞれに配設されるコア素子３は連接部３１で接続されており、基材１の表面にはガスがガス透過路４から外部に排出されるように開口部４Ａが形成されている。1 to 3, the gas generated inside the sealed container 9 (the lower part in FIG. 1) flows through the base material 1 covering the gas discharge hole 5A in the direction of the arrow from the gas discharge hole 5A to the outside (in FIG. 1). A large number of holes 2 communicating with the outside are formed so as to discharge to the upper part), and a solid core element 3 is arranged in each hole 2 . The material of the base material 1 may be any material that does not have gas permeability, such as a metallic material or a non-metallic material, as long as it can form a large number of holes 2 communicating with the outside. Moreover, the material of the solid core element 3 may be any solid material such as a metallic material or a non-metallic material as long as the material is disposed in the hole 2 of the substrate 1 . In the core elements 3 arranged in the respective holes 2 , the core elements 3 arranged in the holes 2 adjacent in the direction in which the gas is discharged are connected by the connecting portions 31 . An opening 4A is formed so that gas is discharged from the gas permeation path 4 to the outside.

各孔２に固形状のコア素子３がその外周と孔２の内表面２Ａとが共有結合でない接触した状態で配設されているが、図１および図２に示すように、前記内部に発生したガスが矢印方向に流れて前記外部に排出されるようにコア素子３の外周と孔２の内表面２Ａとが離間するように間隔が変化するガス透過路４を構成している。なお、このガス透過路４は、コア素子３の外周と孔２の内表面２Ａとの接触状態から離間状態となる間隔は微小な間隙であり、その大きさは、ガス透過構造体としてもちいる用途に応じて、孔２とコア素子３の大きさとの関係で設定すればよい。また、基材１には外部と連通した多数の孔２が形成されているので、コア素子３の外周と孔２の内表面との間隔を各孔２において異なるように配設する構成にしてもよい。A solid core element 3 is disposed in each hole 2 with its outer periphery and the inner surface 2A of the hole 2 in non-covalent contact, but as shown in FIGS. A gas permeation path 4 is formed in which the gap changes so that the outer periphery of the core element 3 and the inner surface 2A of the hole 2 are separated from each other so that the discharged gas flows in the direction of the arrow and is discharged to the outside. In this gas permeation path 4, the distance from the contact state between the outer periphery of the core element 3 and the inner surface 2A of the hole 2 to the separation state is a minute gap, and the size of the gap is used as the gas permeation structure. It may be set according to the relationship between the size of the hole 2 and the core element 3 according to the application. In addition, since a large number of holes 2 communicating with the outside are formed in the base material 1 , the gap between the outer circumference of the core element 3 and the inner surface of the hole 2 is arranged differently for each hole 2. good too.

図１～図３における基材１の孔２にガス透過路４を備える方法について、図示しないが、連続気泡構造のスポンジ材をもちいた基材１において、連続気泡構造の部位を孔２とし、この連続気泡構造の部位（孔２）にコア素子３を配設する構成を説明する。連続気泡構造のスポンジ材としてポリウレタン、ポリオレフィンなどの気泡ポリマーをもちい、このスポンジ材をシリコーンオイル液に浸漬し、加硫して、スポンジ材にシリコーンを充填させて後、スポンジ材の内表面および外表面にあるシリコーン充填体を除去することにより、基材１の連続気泡でできた孔２にシリコーン充填体でできたコア素子３が配設されたガス透過構造体が得られる。このガス透過構造体には、接着性の小さい素材を利用するようにシリコーンゴムを主成分としてできたシリコーン充填体でできたコア素子３が基材１の連続気泡でできた孔２に配設されているので、コア素子３の外周と孔２の内表面とが離間しやすく、コア素子３の外周と孔２の内表面との間隔が変化するガス透過路４を備えることができる。Regarding the method of providing the gas permeation paths 4 in the holes 2 of the base material 1 in FIGS. A configuration for arranging the core element 3 in the portion (hole 2) of this open-cell structure will be described. A cellular polymer such as polyurethane or polyolefin is used as a sponge material having an open-cell structure, and this sponge material is immersed in a silicone oil liquid, vulcanized, and filled with silicone. By removing the silicone filling on the surface, a gas permeable structure is obtained in which the core elements 3 made of silicone filling are arranged in the open-cell pores 2 of the substrate 1 . In this gas permeable structure, a core element 3 made of a silicone filling made mainly of silicone rubber is arranged in a hole 2 made of open cells of a substrate 1 so as to use a material with low adhesiveness. As a result, the outer circumference of the core element 3 and the inner surface of the hole 2 are easily separated from each other, and the gas permeation path 4 in which the distance between the outer circumference of the core element 3 and the inner surface of the hole 2 changes can be provided.

このように、実施形態１に示すガス透過路４を備えたガス透過構造体は、密閉容器９の内部に発生したガスを外部に排出させるようにガス排出孔５Ａを有する容器本体に形成したガス透過構造体であって、基材１と、基材１の内外面に連通した多数の孔２と、各孔２に配設した固形状のコア素子３と、コア素子３の外周と孔２の内表面との間隔が密閉容器９の内部に発生したガス圧で変化するガス透過路４を備えた構成であるので、簡単な構成で水分を透過させにくくしてガス透過性をもたせるガス透過構造体を提供することができる。なお、ガス透過構造体は、その基材１にて蓋体５のガス排出孔５Ａを覆うようにした構成を説明しているが、ガス排出孔５Ａをガス透過構造体の基材１の孔２とする構成にして蓋体５とガス透過構造体の基材１と同一部材としてもよい。Thus, the gas permeable structure provided with the gas permeation path 4 shown in Embodiment 1 is formed in the container body having the gas discharge holes 5A so as to discharge the gas generated inside the sealed container 9 to the outside. A transmission structure comprising a substrate 1, a large number of holes 2 communicating with the inner and outer surfaces of the substrate 1, a solid core element 3 disposed in each hole 2, and the outer circumference of the core element 3 and the hole 2 Since the structure includes the gas permeation path 4 whose distance from the inner surface of the closed container 9 changes with the gas pressure generated inside the closed container 9, the gas permeation that makes it difficult for moisture to permeate with a simple structure and provides gas permeability A structure can be provided. Incidentally, the gas permeable structure has been described as having the base material 1 covering the gas discharge holes 5A of the lid 5, but the gas discharge holes 5A are the holes of the base material 1 of the gas permeable structure. 2, the cover 5 and the base material 1 of the gas permeable structure may be the same member.

（実施形態２）
図５および図６は、実施形態１に示す容器本体の構成部材となる基材１を有するガス透過構造体において、基材１の孔２に可撓性のあるコア素子３が配設されたガス透過構造体を示す。(Embodiment 2)
FIGS. 5 and 6 show a gas permeable structure having a base material 1 which is a constituent member of the container body shown in Embodiment 1, in which a flexible core element 3 is arranged in a hole 2 of the base material 1. 1 shows a gas permeable structure.

図５において、実施形態１と同様に基材１には外部と連通した多数の孔２が形成されており、この孔２のそれぞれには固形状のコア素子３が配設されている。各孔２においてコア素子３の外周と孔２の内表面２Ａとは離間して微小な間隙を有するガス透過路４が配設されているが、このガス透過路４においては、部分的（図５においては、孔の内面の左右側）に接触させて、外圧で接離自在となる。また、基材１の素材は外部と連通した多数の孔２が形成できる素材であれば、実施形態１と同様に金属材や非金属材など任意の素材でよいが、コア素子３の素材は可撓性を有する素材で、フッ素樹脂やシリコーンゴムが例示できる。このように可撓性のあるコア素子３は各孔２に配設されており、ガスが排出される方向に隣接する孔２のそれぞれに配設されるコア素子３は実施形態１と同様に連接部３１で接続されている。なお、コア素子３の素材として可撓性を有する素材をもちいているが、基材１の素材にも可撓性を有する素材をもちいて可撓性のある基材１の孔２に可撓性のあるコア素子３が配設されたガス透過構造体構成してもよい。また、基材１の素材と孔２の素材とを接着作用の小さな素材であれば、例えば、フッ素樹脂材をもちいてもよい。In FIG. 5, a substrate 1 is formed with a large number of holes 2 communicating with the outside, as in the first embodiment, and a solid core element 3 is provided in each of the holes 2 . In each hole 2, a gas permeation path 4 having a minute gap is provided between the outer periphery of the core element 3 and the inner surface 2A of the hole 2. 5, it is brought into contact with the left and right sides of the inner surface of the hole, and can be brought into contact and separated by external pressure. Further, the material of the base material 1 may be any material such as a metallic material or a non-metallic material as in the first embodiment as long as it is a material capable of forming a large number of holes 2 communicating with the outside. A material having flexibility can be exemplified by fluorine resin and silicone rubber. In this way, the flexible core element 3 is arranged in each hole 2, and the core element 3 arranged in each of the holes 2 adjacent in the direction in which the gas is discharged is the same as in the first embodiment. They are connected at a connecting portion 31 . A material having flexibility is used as the material of the core element 3, and a material having flexibility is also used for the material of the base material 1 so that the hole 2 of the flexible base material 1 is flexible. A gas permeable structure in which a flexible core element 3 is arranged may be constructed. Further, if the material of the base material 1 and the material of the holes 2 are made of a material having a small adhesive effect, for example, a fluororesin material may be used.

図６において、基材１は矢印方向すなわち下面から上面に向かって、ガス圧を受けて、このガス圧により、コア素子３が撓んで孔２の内面と部分的に接触していた部位（図６においては孔の内面の右側）が離間してコア素子３の外周と孔２の内面との間隔が変化するガス透過路４が得られ、ガス透過路４は水分を透過させにくくさせ、このガス透過路４からガスが流れて外部に排出される。このとき、基材１のガス圧を受ける部分の厚さが薄くなるとともに孔２が押し広がり、ガスの排出量が多くなるので、基材１が受ける圧力変化によりガス透過量が変化する。なお、この場合、基材１の素材にも可撓性を有する素材を構成すれば、孔２も広がり、ガス圧により間隔の変化がしやすくなり、ガスの排出が向上する。In FIG. 6, the substrate 1 receives gas pressure in the direction of the arrow, that is, from the bottom surface to the top surface. 6, the right side of the inner surface of the hole) is separated to obtain a gas permeation path 4 in which the distance between the outer periphery of the core element 3 and the inner surface of the hole 2 changes, and the gas permeation path 4 makes it difficult for moisture to permeate. Gas flows through the gas permeation path 4 and is discharged to the outside. At this time, the thickness of the portion of the substrate 1 that receives the gas pressure becomes thinner and the holes 2 expand, and the amount of gas discharged increases. In this case, if the material of the substrate 1 is also made of a material having flexibility, the holes 2 are widened, and the gap is easily changed by the gas pressure, thereby improving the discharge of the gas.

このように、実施形態２に示すガス透過路４を備えたガス透過構造体は、可撓性を有するコア素子３をもちいて孔２に配設した固形状のコア素子３の外周と孔２の内表面２Ａとの間隔がガス圧により変化させたガス透過路４を構成して、簡単な構成で水分を透過させにくくしてガス透過性をもたせ、ガス透過量を変化させることができる。As described above, the gas permeable structure provided with the gas permeation path 4 shown in Embodiment 2 uses the core element 3 having flexibility and is arranged in the hole 2 with the outer circumference of the solid core element 3 and the hole 2 . The gas permeation path 4 is configured such that the distance between the inner surface 2A and the inner surface 2A is changed by the gas pressure, and the gas permeation amount can be changed by making it difficult for water to permeate with a simple structure.

（実施形態３）
図７および図８は、図４に例示した容器本体の蓋体５のガス排出孔５Ａをガス透過構造体の基材１にて覆うように容器本体に形成したガス透過構造体において、基材１が可撓性のある素材でできたガス透過構造体を示す。(Embodiment 3)
7 and 8 show the gas permeable structure formed in the container body such that the gas discharge hole 5A of the lid 5 of the container body illustrated in FIG. 1 indicates a gas permeable structure made of flexible material.

図７において、ガス透過構造体の基材１に形成された孔２は連接部３１で接続された２つの孔２を図示するが、ガス透過構造体の基材１は実施形態１と同様に外部と連通した多数の孔２が形成されている。基材１は可撓性のある素材でできており、その素材としては、フッ素樹脂やシリコーンゴムが例示でき、内面から外面に連通した孔２が形成されている。コア素子３は無機質の球形状の粒子でその粒径は各コア素子３が基材１の各孔２の内表面に接触しない大きさで、各孔２に充填されて、各孔２にガス透過路４を備えている。このガス透過構造体の基材１は可撓性のある素材でできているが、密閉容器の内部（図８においては下部）からガス圧が発生していない状態では、基材１が変形しないので、基材１の孔２は変形しない。In FIG. 7, the hole 2 formed in the base material 1 of the gas permeable structure shows two holes 2 connected by a connecting part 31, but the base material 1 of the gas permeable structure is the same as that of the first embodiment. A large number of holes 2 communicating with the outside are formed. The substrate 1 is made of a flexible material such as fluororesin and silicone rubber, and has holes 2 communicating from the inner surface to the outer surface. The core elements 3 are inorganic spherical particles, and the particle size is such that each core element 3 does not come into contact with the inner surface of each hole 2 of the base material 1. Each hole 2 is filled with gas. A transmission path 4 is provided. The base material 1 of this gas permeable structure is made of a flexible material, but the base material 1 does not deform when no gas pressure is generated from the inside of the closed container (lower part in FIG. 8). Therefore, the holes 2 of the substrate 1 are not deformed.

図８において、密閉容器の内部（図８においては下部）からガス圧が発生して基材１を矢印方向のガス圧が発生すると、このガス圧を受けた基材１は変形して基材１の孔２も変形してコア素子３の外周と孔２の内表面２Ａとの間隔が変化する。このとき、基材１のガス圧を受ける部分の厚さが薄くなるとともに孔２が押し広がり、ガスの排出量が多くなるので、基材１が受ける圧力変化によりガス透過量が変化する。In FIG. 8, when gas pressure is generated from the inside of the sealed container (lower part in FIG. 8) and the gas pressure is generated in the direction of the arrow on the base material 1, the base material 1 receiving this gas pressure is deformed and deformed. The hole 2 of 1 is also deformed, and the distance between the outer circumference of the core element 3 and the inner surface 2A of the hole 2 changes. At this time, the thickness of the portion of the substrate 1 that receives the gas pressure becomes thinner and the holes 2 expand, and the amount of gas discharged increases.

このように、実施形態３に示すガス透過路４を備えたガス透過構造体は、可撓性を有する基材１をもちいて固形状のコア素子３の外周と孔２の内表面２Ａとの間隔がガス圧により異なるようにしているので、ガス圧によるガスの流れを変化させたガス透過路４を構成して、簡単な構成で水分を透過させにくくしてガス透過性をもたせることができ、さらに、ガス透過量を変化させることができる。As described above, the gas permeable structure provided with the gas permeation path 4 shown in Embodiment 3 uses the flexible base material 1 and the outer periphery of the solid core element 3 and the inner surface 2A of the hole 2 are separated from each other. Since the gap is made to vary depending on the gas pressure, the gas permeation path 4 can be configured to change the flow of the gas according to the gas pressure, making it difficult for moisture to permeate through a simple structure, thereby providing gas permeability. Furthermore, the amount of gas permeation can be varied.

（実施形態４）
図９は、図４に例示した密閉容器９を密閉させる容器本体の構成部材となる基材を有するガス透過構造体において、繊維間が内外面に連通するように繊維を絡ませた不織布材でできたガス透過構造体を示す。(Embodiment 4)
FIG. 9 shows a gas-permeable structure having a base material that serves as a constituent member of the container body that seals the closed container 9 illustrated in FIG. 1 shows a gas permeable structure.

図９において、基材１は繊維間が内外面に連通するように繊維２０を絡ませた不織布材でできており、この繊維間が外部と連通した多数の孔２１となって、実施形態１から３に示す孔２と同様な構成であり、各孔２１においてコア素子３の外周と孔２１の内表面２１Ａとが接触や離間して分布するようにコア素子３の素材を孔２１のそれぞれに入れて不織布材ででき基材１と、基材１の内外面に連通した孔２１と、孔２１に配設したコア素子３と、コア素子３の外周と孔２１の内表面２１Ａとの間隔が密閉容器９の内部に発生したガス圧で変化するガス透過路４を備えたガス透過構造体が得られる。この場合、繊維２０の素材は繊維間が内外面に連通するように繊維２０を絡ませた不織布材であれば金属繊維やポリマー繊維など特定しないが、接着作用が少なく可撓性のある素材でできるように、例えば、繊維２０の素材をフッ素樹脂材とし、コア素子３の素材をシリコーンゴムとすることにより、コア素子３の外周と孔２１の内表面２１Ａとが接触してあっても離間しやすいので、コア素子３の外周と孔２１の内表面２１Ａとが接離自在なガス透過路４が得られる。このように内外面に連通するように繊維２０を絡ませた不織布材でできた基材１をもちいて孔２１のそれぞれにはコア素子３を配設させているので、基材１が受ける圧力変化によりコア素子３の外周と孔２１の内表面２１Ａとの間隔が密閉容器の内部に発生したガス圧で変化して簡単な構成で水分を透過させにくくしてガス透過性をもたせ、ガス透過量が変化するガス透過構造体が得られる。In FIG. 9, the base material 1 is made of a non-woven fabric material in which fibers 20 are entangled so that the fibers communicate with the inner and outer surfaces, and the spaces between the fibers become a large number of holes 21 communicating with the outside. 3, and the material of the core element 3 is applied to each of the holes 21 so that the outer periphery of the core element 3 and the inner surface 21A of the hole 21 are distributed in contact with each other or separated from each other in each hole 21. a base material 1 made of a non-woven fabric material, holes 21 communicating with the inner and outer surfaces of the base material 1, core elements 3 disposed in the holes 21, and a space between the outer periphery of the core element 3 and the inner surface 21A of the hole 21. A gas-permeable structure having a gas-permeable path 4 that changes with the gas pressure generated inside the sealed container 9 is obtained. In this case, the material of the fiber 20 is not specified, such as metal fiber or polymer fiber, as long as it is a non-woven fabric material in which the fiber 20 is entangled so that the interfiber communicates with the inner and outer surfaces, but it can be made of a flexible material with little adhesion. Thus, for example, by using a fluororesin material for the fiber 20 and silicone rubber for the core element 3, the outer periphery of the core element 3 and the inner surface 21A of the hole 21 are separated from each other even if they are in contact with each other. Therefore, the gas permeation path 4 in which the outer periphery of the core element 3 and the inner surface 21A of the hole 21 can be brought into contact with each other can be obtained. Since the core element 3 is arranged in each of the holes 21 using the base material 1 made of the non-woven fabric entangled with the fibers 20 so as to communicate with the inner and outer surfaces, the pressure change to which the base material 1 receives is reduced. , the gap between the outer periphery of the core element 3 and the inner surface 21A of the hole 21 is changed by the gas pressure generated inside the closed container, and the simple structure makes it difficult for moisture to permeate, giving gas permeability, and increasing the amount of gas permeation. A gas permeable structure is obtained in which .

本発明のガス透過構造体は、パッキンやフィルタや安全弁として利用できる。The gas permeable structure of the present invention can be used as a packing, a filter, or a safety valve.

１ 基材
２、２１ 孔
３ コア素子
４ ガス透過路1 base material 2, 21 hole 3 core element 4 gas permeation path

Claims (1)

密閉容器の内部に発生したガスを外部に排出させるように容器本体の基材に形成したガス透過構造体であって、前記基材にはガスが排出される方向に内外面に連通した多数の孔が形成されており、前記多数の孔には固形状のコア素子が配設されてあって、前記コア素子は前記多数の孔のそれぞれの孔の内表面と部分的に接触しており、前記密閉容器の内部のガス圧で前記コア素子が撓んで前記孔の内表面から離間して前記多数の孔のそれぞれが連通してガス透過路となるガス透過構造体において、前記コア素子は、フッ素樹脂またはシリコーンゴムでできており、前記多数の孔の隣接する孔に連接部で接続して配設されていることを特徴とするガス透過構造体。A gas permeable structure formed on a base material of a container body so as to discharge gas generated inside a closed container to the outside, wherein the base material has a large number of gas permeable structures communicating with the inner and outer surfaces in the direction in which the gas is discharged. holes formed therein, a solid core element disposed in said plurality of holes, said core element partially contacting an inner surface of each hole of said plurality of holes; In the gas permeable structure, in which the core element is bent by the gas pressure inside the closed container to separate from the inner surface of the hole and communicate with each of the plurality of holes to form a gas permeation path, the core element comprises: A gas permeable structure, characterized in that it is made of a fluororesin or a silicone rubber, and is arranged so as to be connected to adjacent holes of the plurality of holes by connecting portions .
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JP2016103631A (en) 2014-11-18 2016-06-02 睦月電機株式会社 Gas permeable member, sealed container body, and gas permeable member for sealed electrochemical device
JP2017220656A5 (en) 2016-06-06 2019-07-04

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JPS54109058U (en) * 1978-01-20 1979-08-01
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JP2002289172A (en) 2001-03-28 2002-10-04 Nec Tokin Corp Sealing plug and closed type storage device using it
US20140283839A1 (en) 2013-03-01 2014-09-25 Reaction Systems, Llc Advanced supported liquid membranes for carbon dioxide control in extravehicular activity applications
JP2016103631A (en) 2014-11-18 2016-06-02 睦月電機株式会社 Gas permeable member, sealed container body, and gas permeable member for sealed electrochemical device
JP2017220656A5 (en) 2016-06-06 2019-07-04

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